Hmmmm...I just gave you the journal (journal of bacteriology) and the year (1972), letting you retrieving the full reference from the webpage linked. Basic database searching abilities might be a helpful skill to develop.Pubmed, Agricola and Google scholar are your friends.You will find J. bact at jb.asm.org to start the search for your PDF

Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)